package com.hsp.homework_;

public class Homework02 {
    public static void main(String[] args) {
        if (args[4].equals("john")) {
            System.out.println("AA");
        }else {
            System.out.println("BB");
        }
        Object o = args[2];
        //String是Object子类向下转型，可以。转成Interger，不行
//        Integer i = (Integer) o;
        String i = (String) o;
    }
}

